1. Metacarp short, at most as long as pterostigma, at most twice as long as its distance from apex of the marginal cell (e.g. Fig. 28a
View Figure
)................................................................................................ 2

- Metacarp long, usually distinctly longer than pterostigma, at least three× as long as distance from apex of the marginal cell (e.g. Fig. 2d
View Figure
).......................................................................................... 6

- Metacarp shorter than length of pterostigma, its distance from apex of the marginal only weakly shorter than its own length; T1 not widened towards apex; vein r slightly shorter (or as long as) vein 2-SR........................................ 5

- Inner spur of hind tibia less than half of hind basitarsus; hypopygium not produced into a spinule; last five antennomeres darker.............................................................................................. 24 24. Ocelli on obtuse triangle, posterior imaginary tangent to fore ocellus transecting hind two ocelli; T2 at least 3× wider than long in the middle; 1 st discal cell of fore wing wider than high (e.g. Fig. 25c
View Figure
)......................................... 25

- T1 subparallel or parallel or with weakly arched sides; T1 long to very long; hind femur normal, at least 4× longer than wide.................................................................................................... 31